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Effect of Different Substitutions at the 1,7-Bay Positions of Perylenediimide Dyes on Their Optical and Laser Properties

Título :
Effect of Different Substitutions at the 1,7-Bay Positions of Perylenediimide Dyes on Their Optical and Laser Properties
Autor :
Zink Lorre, Nathalie
Ramírez, Manuel G.
Pla, Sara
Boj, Pedro G.
Quintana, José A.
Villalvilla, José M.
Sastre-Santos, Ángela
Fernández Lázaro, Fernando
Díaz-García, María A.
Editor :
MDPI
Departamento:
Departamentos de la UMH::Farmacología, Pediatría y Química Orgánica
Fecha de publicación:
2023
URI :
https://hdl.handle.net/11000/31043
Resumen :
Perylenediimide (PDI) compounds are widely used as the active units of thin-film organic lasers. Lately, PDIs bearing two sterically hindering diphenylphenoxy groups at the 1,7-bay positions have received attention because they provide a way to red-shift the emission with respect to bayunsubstituted PDIs, while maintaining a good amplified spontaneous emission (ASE) performance at high doping rates. Here, we report the synthesis of a series of six PDI derivatives with different aryloxy groups (PDI 6 to PDI 10) or ethoxy groups (PDI 11) at the 1,7 positions of the PDI core, together with a complete characterization of their optical properties, including absorption, photoluminescence, and ASE.We aim to stablish structure-property relationships that help designing compounds with optimized ASE performance. Film experiments were accomplished at low PDI concentrations in the film, to resemble the isolated molecule behaviour, and at a range of increasing doping rates, to investigate concentration quenching effects. Compounds PDI 10 and PDI 7, bearing substituents in the 20 positions of the benzene ring (the one contiguous to the linking oxygen atom) attached to the 1,7 positions of the PDI core, have shown a better threshold performance, which is attributed to conformational (steric) effects. Films containing PDI 11 show dual ASE.
Palabras clave/Materias:
perylenediimides
amplified spontaneous emission
photoluminescence
organic lasers
Tipo documento :
application/pdf
Derechos de acceso:
info:eu-repo/semantics/openAccess
Aparece en las colecciones:
Artículos Farmacología, Pediatría y Química Orgánica



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